PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791473376',
];

$_COOKIE = [
    'PHPSESSID' => 'nogqqs1cvpb3rek3tg052vpe36',
    'topics-session' => '1791981177.424.16901.340018|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '8868e8720204b03ec3b2993253fd4d85f1fb7068d456c84fadd44ac52798aae1a:2:{i:0;s:5:"_csrf";i:1;s:32:"kDIHGSF2-Ug0aZlk-jDgcZAEIBsCCFIk";}',
];

$_SESSION = [
    '__flash' => [],
];